Novel plasma portable mercury pollution detector

A plasma and detector technology, applied in the field of plasma portable mercury pollution detectors, can solve problems that have not been solved, and achieve the effects of easy flexible integration, improved detection accuracy, and long service life

Pending Publication Date: 2020-02-21
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the demand for mercury pollution detectors with low price and good practicability has not been solved on the market.

Method used

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  • Novel plasma portable mercury pollution detector
  • Novel plasma portable mercury pollution detector
  • Novel plasma portable mercury pollution detector

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0037] Such as figure 1 , 2 As shown, it is a schematic diagram of the structure and work flow of th...

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Abstract

The invention relates to the technical field of analytical test instruments, in particular to a novel plasma portable mercury pollution detector. The novel plasma portable mercury pollution detector mainly comprises an all-fiber sensing unit and a demodulation unit. In the all-fiber sensing unit, gold nanoparticles and optical evanescent waves act to generate surface plasma resonance, and a resonance peak value is obtained at the resonance wavelength. In the demodulation unit, reflection characteristics of a fiber bragg grating are utilized to adjust the scanning Bragg center wavelength of a strain gauge, so that absorption peak wavelength detection of the sensing probe is converted into light intensity detection. The sensing unit is composed of plasma gold nanostructures of an optical fiber, utilizes sensitivity of the surface plasma resonance wavelength to particle concentration of the nanostructures to detect the concentration of adsorbed mercury particles, improves the mercury pollution detection rate and has a self-recovery function. The demodulation unit based on the fiber bragg grating has the advantages of easiness in flexible integration and miniaturization, and can detectthe mercury content in gases, liquids and narrow spaces.

Description

technical field [0001] The invention relates to the technical field of analytical testing instruments, in particular to a novel plasma portable mercury pollution detector. Background technique [0002] Mercury is an environmental pollutant that exists in the atmosphere for a long time and has global mobility. Mercury emissions come from natural sources and man-made sources, involving coal-fired power plants, coal-fired boilers, non-ferrous metal smelting, cement production, mercury-containing products and other fields. Mercury emissions in the atmosphere mainly come from fossil fuel combustion, especially Combustion of coal, and coal-fired power plants are the largest source of global mercury emissions to the atmosphere. [0003] Mercury exists in several different chemical forms, including elemental mercury, organic mercury, and inorganic mercury. Among them, the organic form of methylmercury is the most toxic, mainly formed through microbial activities in the environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/552
CPCG01N21/554
Inventor 武京治李孟委李智慧王艳红
Owner ZHONGBEI UNIV
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